Quantile function causing error in MATLAB

Question

I am using quantile function in the simplest form:

x = [1.2,3,4,5];
y = quantile(x,0.5);

But I get the error:

Undefined function 'quantile' for input arguments of type 'double'.

I was not having this error in MATLAB R2009a but get this error in R2012a. What could be the reason?

Nick Nick · Accepted Answer · 2012-09-13T15:10:11

Please run:

license('test', 'Statistics_Toolbox')

In case this returns a 0 then you do not have an active license of the statistics toolbox.

However if you want to use it as in your example the following code would do:

y = median(x);